The longer the deal,
the easier promises get buried.
Terasu keeps pages, files, messages, tasks, and AI answer evidence in one Room so cross-functional teams never lose the assumptions behind a deal.
No credit card required · Start with one deal RoomSee how a Room works →
Built and operated by
Built and operated by koromo Inc. The product team supports you directly, and your feedback feeds straight into a weekly release cycle.
About the company →How we handle data
Traffic is encrypted, access is scoped per Room, and anything customer-facing runs only after your approval.
Security practices →What the AI can see
The AI reads only the target Room and every answer links back to its sources.
How the AI works →THE PROBLEM
The files exist. The minutes exist. The decision context still disappears.
In long sales cycles, progress stops less from missing information and more from not knowing where the important context lives.
Previous agreements become ambiguous
As meetings pile up, decisions and follow-ups blur together, and the next meeting starts with re-confirmation.
Example: The customer asked for 3-year audit logs, but no one knows whether it was reflected in the contract terms or proposal.
Customer concerns become hard to see
Decision-makers, users, security, and legal teams all leave concerns in different places.
Example: The deal looks blocked by price, but the real concern is whether the workflow will work for the operating team.
Internal updates are repeated again and again
Every manager, SE, CS, and PM review starts with the same context-setting explanation.
Example: When ownership changes, the team has to rediscover why the proposal took its current shape.
PRODUCT ARCHITECTURE
With Terasu, collect it in a Room, see buyer signals, and ask AI.
Pages, files, messages, tasks, and stakeholders stay in one Room, with buyer activity and AI answers visible in the same place.
START WITH ONE ROOM
Start with one active deal and get value in 5 minutes.
No major workflow change is needed. Begin by putting the documents, meeting notes, and questions from one active deal into a Room.
No credit card required. Anything customer-facing is executed only after your approval.
What to do first
What you can ask AI right away
DECISION TRAIL
The decision trail stays in the Room.
Promises after meetings, page updates, open tasks, and AI answer evidence stay in the same Room, so teams can trace why a decision was made.
Decision trail inside the Room
Back to sourceCustomer requests extending audit-log retention from the standard 1 year to 3 years.
The operating team clarifies that their concern is whether the workflow will work day to day.
AI organizes the items to answer before the next meeting: audit readiness, operational load, and compliance export format.
The page shifts from ROI-only to emphasizing audit logs and implementation operations.
What teams can trace
Not just files. Keep the reason behind the decision.
Facts change during a deal. Terasu keeps comments, files, tasks, and AI answer evidence in the Room so teams can compare past statements with the latest agreement.
Teams can go back to the PoC minutes, customer messages, and open tasks that shaped the answer.
FOR EVERY STAKEHOLDER
Each stakeholder needs a different level of context.
Sales reps, managers, presales, and customer stakeholders can look at the same Room and understand the deal at the level they need.
Sales owner view
Stop asking where that decision was made.
Customer follow-up, internal alignment, material updates, and task tracking all happen at once. Terasu keeps deal context and next actions in the Room, then organizes them with evidence.
What AI can check
Check open promises, next actions, and what value to emphasize using only information in the Room.
ROOM-AWARE AI
AI answers only from the Room context.
Terasu treats AI as a way to verify deal context, not as a flashy black box. If the Room does not contain enough evidence, AI should say so and show what it used. Your content is never used to train AI models.
Common questions
Example answer
The open replies are audit logs, operational load, and compliance export format.
Customer messages, PoC review minutes, and open tasks show that security and field-operations answers remain more urgent than pricing.
Sources used in the answer
Visibility & evidence
Separate what customers see from what your team uses to decide.
External guests see only shared pages, while internal notes and AI evidence stay managed inside the Room. AI reference scope is limited to the target Room, so teams can collaborate with customers without exposing private context.
Before
Customer materials, internal notes, and the evidence you want to ask AI about live in different places.
With Terasu
One Room keeps customer-visible information separate from internal-only context.
Result
When you ask AI, it answers from the target Room only and lets you verify the pages, messages, and tasks behind the answer.
WHY TERASU
How Terasu differs from typical file-sharing tools.
Unlike send-and-done file sharing, Terasu accumulates the deal context itself inside the Room.
Typical file-sharing tools
Terasu
After you send a document
Typical file-sharing tools
You only know whether it was opened. Reactions stay invisible until the next meeting.
Terasu
Per-page views and reactions stay in the Room, so you see interest shift over time.
Asking the AI
Typical file-sharing tools
Generic knowledge produces answers detached from the actual deal.
Terasu
Answers come only from the Room, with sources attached. Unknowns are stated as unknown.
Internal notes vs. customer sharing
Typical file-sharing tools
Split across separate tools, scattering the decision trail.
Terasu
One Room with per-item visibility, keeping internal reasoning next to shared pages.
On the Business plan, Room data also powers Deal Health AI (5-axis scoring) and stakeholder maps.
Pricing
Pricing Plans
After a 14-day free trial, choose the plan that fits your team (prices shown exclude tax)
Free
For teams getting started
- ✓Up to 3 rooms
- ✓2 pages per room
- ✓Basic document sharing
- ✓View logs
Starter
For small deal and project teams
- ✓Up to 30 rooms
- ✓10GB storage
- ✓Advanced view analytics
- ✓Messaging + Slack integration
- ✓50 tasks per room
Business
Most popularFor cross-functional deals and implementation projects
- ✓Unlimited rooms
- ✓50GB storage
- ✓Analytics export
- ✓Audit logs
- ✓Up to 3 workspaces
Enterprise
For large orgs requiring advanced security
- ✓All Pro features
- ✓6 pages per room
- ✓CRM integration
- ✓SSO & audit logs
- ✓Dedicated support
FAQ
Frequently asked questions
How do you handle security and data?
Traffic is encrypted and access is scoped per Room. Anything customer-facing runs only after approval. See the security page for details.View the security page →
What information does the AI reference?
Only pages, files, conversations, and tasks inside the target Room. It never reads outside your workspace, and every answer links back to its sources.
Can I try it for free?
The Free plan covers 2 members and 3 Rooms with no credit card. Paid plans include a 14-day free trial.
How long does onboarding take?
No workflow change is required. Start by placing one active deal’s documents, notes, and questions into a Room — you can start the same day.
What happens to my data if I cancel?
We support data export according to your contract. Contact us about cancellation and data retrieval.
How is this different from the file-sharing tool we already use?
Instead of send-and-done, views, reactions, promises, and AI answer evidence accumulate in one Room. See the comparison section above.
Is our data used to train AI models?
No. Your content is never used to train our or any third party’s AI models, and our agreements with external AI providers do not permit training use. The AI reads only the target Room and answers with sources.
Terasu is in beta — is our data safe and will it carry over?
You can export your data at any time (CSV, JSON, PDF, and more). When Terasu reaches general availability, your data and plan are expected to carry over, and we will announce any significant changes in advance.
Have other questions? Contact us →
Insights
Blog & resources
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Get action plan templates free and instantly. 8 copy-paste formats, filled-in examples for sales, personal, and admin goals, a 5-step writing guide, the sales/MAP/internal split, and how it differs from a MAP. Updated July 2026.
- Sales Knowledge
How to Run a PoC: 5 Steps, Evaluation Criteria, a Scorecard, and Not Losing the Deal (2026)
A practical guide to running a proof of concept (PoC): the 5 steps of goal definition, evaluation criteria, team setup, execution, and the go/pivot/stop decision. Includes a concrete evaluation-criteria matrix, a ready-to-use PoC scorecard, cost and timeline benchmarks, how to escape PoC hell, and how sellers (vendor reps) keep a PoC from turning into a lost deal — covered from both the buyer's and seller's perspective.
- Sales AI
MCP for Sales｜How to Connect Deal Data to AI (2026 Guide)
A plain-English guide to using MCP (Model Context Protocol) in sales. Learn how MCP works, what changes when you connect CRM, deal history, and engagement data to AI, how to choose an MCP server, and how Terasu's own MCP server (76 tools, scoped tokens, audit logs) is implemented—explained with first-party detail.
Start with one deal Room
today
Add documents, notes, questions, and tasks, then ask AI what remains unanswered and what to do next. Customer-facing actions require approval, so you can test safely.